<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>后盾人</title>
  </head>
  <body>
    <div>
      随着视频的不断更新，文档也在不断丰富，观看视频时对照文档学习效果更好。
      大叔每晚8点直播，抖音或B站中搜索【后盾人】，我们一起聊聊天写写代码。
    </div>
    <style>
      html {
        font-size: 12px;
      }
      body {
        background-color: #f3f3f3;
        display: flex;
        justify-content: center;
        align-items: center;
        width: 100vw;
        height: 100vh;
      }
      div {
        background: white;
        width: min(50vw, 300px);
        font-size: max(4vw, 1rem);
        padding: 30px;
        height: max-content;
        line-height: 2em;
        box-shadow: 0 0 5em rgba(0, 0, 0, 0.2);
      }
    </style>
  </body>
</html>
